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  <title>预定义常量</title>

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</div><hr /><div id="fdf.constants" class="appendix">
 <h1>预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
 <dl>
 
  
   <dt id="constant.fdfvalue">
    <strong><code>FDFValue</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfstatus">
    <strong><code>FDFStatus</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdffile">
    <strong><code>FDFFile</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfid">
    <strong><code>FDFID</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfff">
    <strong><code>FDFFf</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfsetff">
    <strong><code>FDFSetFf</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfclearff">
    <strong><code>FDFClearFf</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfflags">
    <strong><code>FDFFlags</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfsetf">
    <strong><code>FDFSetF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfclrf">
    <strong><code>FDFClrF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfap">
    <strong><code>FDFAP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfas">
    <strong><code>FDFAS</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfaction">
    <strong><code>FDFAction</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfaa">
    <strong><code>FDFAA</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfapref">
    <strong><code>FDFAPRef</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfif">
    <strong><code>FDFIF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfenter">
    <strong><code>FDFEnter</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfexit">
    <strong><code>FDFExit</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfdown">
    <strong><code>FDFDown</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfup">
    <strong><code>FDFUp</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfformat">
    <strong><code>FDFFormat</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfvalidate">
    <strong><code>FDFValidate</code></strong>
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfkeystroke">
    <strong><code>FDFKeystroke</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfcalculate">
    <strong><code>FDFCalculate</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfnormalap">
    <strong><code>FDFNormalAP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfrolloverap">
    <strong><code>FDFRolloverAP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
  
   <dt id="constant.fdfdownap">
    <strong><code>FDFDownAP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>
 
   <dd>
 
    <span class="simpara"> 

    </span>
   </dd>

  
 </dl>

</div>
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